Anionic associative rheology modifiers

Abstract

The present invention relates to new anionic associative rheology modifiers, their manufacture and application.

1 - 10 . (canceled) 
     
     
         11 . Polymer comprising as polymerized units
 a) 25 to 85% by weight of acrylic acid,   b) 10 to 60% by weight of N-vinyl pyrrolidone,   c) 0.5 to 10% by weight of at least one cationic monomer,   d) 0.5 to 10% by weight of at least one of compounds d1) or d2)   
       
         
           
           
               
               
           
         
         
           wherein 
           the order of the alkylene oxide units is arbitrary, 
           k and l
 independently of one another, are an integer from 0 to 1000, where the sum of k and l is at least 5, 
 
           R 8  is hydrogen or C 1 -C 4 -alkyl, 
           R 9  is C 3 -C 30 -alkyl, C 8 -C 30 -alkenyl or C 8 -C 30  alkylaryl, and 
           X is O or a group of the formula NR 10 , in which R 10  is H, alkyl, alkenyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl, 
         
         e) 0.01 to 2% by weight of at least one crosslinking agent, 
         f) 0 to 30% by weight of further monomers different from a) to e), the total of a) to f) adding up to 100% by weight. 
       
     
     
         12 . Polymer according to  claim 11 , wherein at least one cationic monomer c) is chosen from vinylimidazole compounds of the general formula (II) 
       
         
           
           
               
               
           
         
       
       in which R 5  to R 7 , independently of one another, are hydrogen, C 1 -C 4 -alkyl or phenyl. 
     
     
         13 . Polymer according to  claim 12 , wherein at least one cationic monomer c) is N-vinyl imidazole. 
     
     
         14 . Polymer according to  claim 11 , wherein at least one monomer f) is chosen from methacrylic acid, esters of α,β-ethylenically unsaturated mono- and dicarboxylic acids with C 1 -C 8 -alkanols. 
     
     
         15 . Polymer according to  claim 14 , wherein at least one monomer f) is chosen from C 1 -C 6 -(meth)acrylates. 
     
     
         16 . Polymer according to  claim 11 , wherein at least one compound d1) is chosen from polyether (meth)acrylates terminated with C 8 -C 22 -alkyl groups. 
     
     
         17 . Polymer according to  claim 11 , wherein the molar ratio of compounds a) to c) is at least 4:1. 
     
     
         18 . Polymer according to  claim 11 , comprising as polymerized units
 a) 65 to 75% by weight of acrylic acid,   b) 10 to 25% by weight of N-vinyl pyrrolidone,   c) 0.5 to 2% by weight of N-vinyl imidazole,   d) 2 to 6% by weight of C 16 -C 18  PEG-25 methacrylate,   e) 0.5 to 1.5% by weight of at least one crosslinking agent,   f) 2 to 8% by weight of methacrylic acid and 0.2 to 1.0% by weight of methylmethacrylate,   the total of a) to f) adding up to 100% by weight.   
     
     
         19 . Cosmetic composition comprising a polymer according to  claim 11 . 
     
     
         20 . Method for modifying the viscosity of aqueous compositions, wherein said method comprises adding a polymer according to  claim 11  to said aqueous compositions.